How polyps are removed
Small polyps are lifted off with a fine wire loop called a snare, often without electric current ("cold snare"). Larger, flat polyps are first lifted with an injection of fluid under them, then removed in one or more pieces. This is called endoscopic mucosal resection (EMR). You don't feel the removal; the bowel lining has no pain nerves.
"Too big to remove"?
Many large polyps that were once sent for surgery can now be removed endoscopically by EMR, avoiding an operation. If you've been told a polyp needs surgery, an in-person second opinion is reasonable.
Risks
- Bleeding, during or up to two weeks after, more likely with large polyps and blood thinners. Usually stopped endoscopically.
- Perforation (a small tear) is uncommon; it's usually closed with clips at the time.
Pass large amounts of blood or develop severe pain or fever after polypectomy? Contact the hospital or go to emergency.
Follow-up
The polyp is sent to the lab. When your next colonoscopy is due depends on how many polyps there were, their size and type, and how completely they were removed. You'll get a written plan.